Chapter 6 Closure

What is the equation of the LSRL (line of best fit)?

What is the correlation coeffecient (r)?

Fully describe the association of the graph based on the r value.

Describe the slope and y-intercept in context.

About how many Nightingales would Ranger Sarah expect to find in a particualar area with 6 oaks?

Ranger Sarah went back to the plot with 5 oaks and counted 4 Nightingales. What is the residual value?

(Remember Residuals are found by finding the difference between the Actual and Predicted outcomes.)

A recent study found a strong, positive, linear, associaton between the number of children in a family and the size of the house. Reporters rant, "If you want a bigger house, you need to have more children!" Does this make sense? Use mathematical vocabulary in your answer.

A study showed a positive association between cancer and the number of cups of coffee consumed each day. Does this mean that reducing the amount of coffee you drink will reduce your chances of getting cancer? Explain.

What is the multiplier for this situation?

If this trend continues, what will be the cost in 4 years (to the nearest dollar)?

Write an equation that represents the cost in n years.

Elliot's dad bought a new car for $31,000 in 2012. Elliotread that a new car loses about 15% of its value each year. Make a table for the predicted value of the car for the first 5 years, then wirte a function that represents the value in (t) years.